Safety razor



Sept. 22, 194-2. w BERG 2,296,461

SAFETY RAZOR Filed Oct. 20, 1941 Patented Sept. 22, 1942 UNITED STATESPATENT OFFICE SAFETY RAZOR Henry W. Berg, Cleveland, Tenn.

Application October 20, 1941, Serial No. 415,821

Claims.

This invention relates to a safety razor and aims to provide in thattype of razor wherein the blade is removably clamped or held by spacedlugs at the cutting edge in combination with a spring-urged clamp at theedge parallel thereto, a novel means which functions to impart to thecutting edge portion of the blade, a slight convexity or curvaturerelatively to the guard, which I have found markedly increases theshaving eff1- ciency of the blade and which means is additionallyadvantageous in urging the cutting edge portion against the lugs and theblade in place with greater firmness.

I further aim to attain the aforesaid results through the use of amanually operable, centrally and diagonally disposed element whichcontacts the rear surface of the blade relatively close to the cuttingedge and has means to so restrict its movement that the blade cannot beunduly tensioned or curved.

Various additional objects and advantages will become apparent from aconsideration of th description following taken in connection with theaccompanying drawing illustrating an operative embodiment.

In said drawing:

Figure 1 is a sid elevation of a safety razor in which my invention isembodied;

Figure 2 is a front end elevation of such safety razor, with the bladeomitted to disclose details;

Figure 3 is an enlarged view, primarily in central, vertical,longitudinal section, through the safety razor and my improvements;

Figure 4 is a horizontal sectional view taken on the plane of line 4-4of Figure 1;

Figure 5 is a detail perspective View of the blade-flexing rod, and

Figure 6 is a detail perspective view of a modified form ofblade-flexing rod.

Referring specifically to the drawing, my improvements are shown anddescribed as applied to one construction of safety razor by Way ofexample. In such construction, I!) designates an angularly disposedmetallic mounting plate whose lower portion is formed as a guard at Hfor a blade [2 removably disposed against the forward surface of suchmounting plate. Said blade I 2 at spaced locations along its cuttingedge I3, is overlapped by lugs or hooks I4 and at the edge parallel tosaid cutting edge, which is reinforced by a backing I5, the same isengaged by a clamp IS.

The specific clamp I6 is in the form of an L-shaped lever having a mainarm 16 extending through an opening I! in plate l0 and pivoted in placeat l 8 to the under surface of a flange l9 extending angularly from theupper edge of plate It]. A leaf spring 20 is fastened at 2| to the undersurface of flang IS in overlapping relation to an arm 22 of clamp l6,normally urging the clamp into the blade-clamping position shown, andpermitting the main arm N5 of said clamp to be gripped and swung awayfrom the blade to enable removal and insertion of blades.

A removable handle 23 extends rearwardly from the flange l9.

In carrying out my invention in connection with the aforesaid type ofsafety razor, holes or openings 24 and 25, respectively, are drilled orotherwise provided through the plate [0 and flange I9. Screw threads areprovided in the wall of opening 25.

A rod 26, disposed at the angl shown, has screw threads 2'! threaded tothose in opening 25. Said rod passes loosely through and is guided byopening 24, the latter preferably being enlarged with respect to therod. At its forward end 28, said rod abuts the rear or back surface ofblade I2 so that through screw adjustment of the rod, the blade l2 at alocation relatively close to the cutting edge portion, will be flexed orcurved. Said end 28 is preferably chamfered or rounded as shown.

Said rod is operated through the turning of a crank knob 29 or theequivalent and the rod may be secured at any desired adjustment throughthe bearing of a nut 30 against the flange I9. Nut 30 is threaded onthreads 21 as is also a nut 3| which serves as a lock for the nut 30.

Through the adjustment of rod 26, blade [2, since it is overlapped bythe spaced lugs I4 and yieldably held by clamp I6, may be flexed orbowed within certain limits, centrally and adjustably, at the cuttingedge portion away from the plate I0. I have found that the blade thuscurved, increases its shaving efficiency. For better emphasis, thecurvature of the blade in Fig. 4, is exaggerated. Although the rod 26may be loosened, it can be rapidly returned to the exact position ofadjustment with respect to a blade l2 due to the engagement of nut 30with flange l9 and locking of said nut by nut 3i.

The divergence of rod 26 with respect to the blade l2, when the blade istensioned and flexed by the rod, urges the cutting edge into contactwith the lugs l4 and urges the back against cilitate manipulation of therod 26 by a finger of the same hand which grasps the handle or holds therazor.

The upper end of rod 26 may have any suitable manipulating part, thecrank knob 29 having been shown by way of example only. For instance, around knob 32 may be used instead, as suggested in Figure 6.

Various changes may be resorted to within the spirit and scope of theinvention.

I claim as my invention:

1. A safety razor having a mounting plate, a blade, means clamping saidblade against one face of the plate including spaced elements engagingthe cutting edge portion of the blade, and means operatively mounted onthe mounting plate movable independently of the plate against the bladeadjacent its cutting edge and between said elements of a length to flexsaid cutting edge portion to bow the latter relatively to and out ofparallelism to the plate and said elements.

2. A safety razor having a mounting plate, a blade, means clamping saidblade against one face of the plate including spaced elements engagingthe cutting edge portion of the blade, and means operatively screwthreaded on the mounting plate in diverging relation to the cutting edgeportion of the blade and movable independently of the plate against thelatter between said elements of a length to flex said cutting edgeportion to bow the latter relatively to and out of parallelism to theplate and said elements.

3. A safety razor having a mounting plate, a blade removably disposedagainst one face thereof having a cutting edge portion and a back edgeportion, longitudinally spaced lugs on said plate overlapping the bladeat the cutting edge portion, a clamp on the plate overlapping the backedge portion of said blade, a flange extending from said plate on theside opposite to said lugs, and a centrally disposed element on therazor passing diagonally through the plate and said flange and screwthreaded to and movable independently of one of them, said elementcontacting the blade between the lugs and relatively close to saidcutting edge and being of a length to convex the blade out ofparallelism with and rela- HENRY W. BERG.

